| /************************************************************************** |
| * |
| * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. |
| * All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the |
| * "Software"), to deal in the Software without restriction, including |
| * without limitation the rights to use, copy, modify, merge, publish, |
| * distribute, sub license, and/or sell copies of the Software, and to |
| * permit persons to whom the Software is furnished to do so, subject to |
| * the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the |
| * next paragraph) shall be included in all copies or substantial portions |
| * of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. |
| * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR |
| * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| * |
| **************************************************************************/ |
| |
| #include "main/imports.h" |
| #include "main/image.h" |
| #include "main/macros.h" |
| #include "main/mfeatures.h" |
| |
| #include "vbo/vbo.h" |
| |
| #include "st_context.h" |
| #include "st_atom.h" |
| #include "st_cb_bufferobjects.h" |
| #include "st_draw.h" |
| #include "st_program.h" |
| |
| #include "pipe/p_context.h" |
| #include "pipe/p_defines.h" |
| #include "util/u_inlines.h" |
| |
| #include "draw/draw_private.h" |
| #include "draw/draw_context.h" |
| |
| |
| #if FEATURE_feedback || FEATURE_rastpos |
| |
| /** |
| * Set the (private) draw module's post-transformed vertex format when in |
| * GL_SELECT or GL_FEEDBACK mode or for glRasterPos. |
| */ |
| static void |
| set_feedback_vertex_format(struct gl_context *ctx) |
| { |
| #if 0 |
| struct st_context *st = st_context(ctx); |
| struct vertex_info vinfo; |
| GLuint i; |
| |
| memset(&vinfo, 0, sizeof(vinfo)); |
| |
| if (ctx->RenderMode == GL_SELECT) { |
| assert(ctx->RenderMode == GL_SELECT); |
| vinfo.num_attribs = 1; |
| vinfo.format[0] = FORMAT_4F; |
| vinfo.interp_mode[0] = INTERP_LINEAR; |
| } |
| else { |
| /* GL_FEEDBACK, or glRasterPos */ |
| /* emit all attribs (pos, color, texcoord) as GLfloat[4] */ |
| vinfo.num_attribs = st->state.vs->cso->state.num_outputs; |
| for (i = 0; i < vinfo.num_attribs; i++) { |
| vinfo.format[i] = FORMAT_4F; |
| vinfo.interp_mode[i] = INTERP_LINEAR; |
| } |
| } |
| |
| draw_set_vertex_info(st->draw, &vinfo); |
| #endif |
| } |
| |
| |
| /** |
| * Called by VBO to draw arrays when in selection or feedback mode and |
| * to implement glRasterPos. |
| * This is very much like the normal draw_vbo() function above. |
| * Look at code refactoring some day. |
| */ |
| void |
| st_feedback_draw_vbo(struct gl_context *ctx, |
| const struct _mesa_prim *prims, |
| GLuint nr_prims, |
| const struct _mesa_index_buffer *ib, |
| GLboolean index_bounds_valid, |
| GLuint min_index, |
| GLuint max_index, |
| struct gl_transform_feedback_object *tfb_vertcount) |
| { |
| struct st_context *st = st_context(ctx); |
| struct pipe_context *pipe = st->pipe; |
| struct draw_context *draw = st->draw; |
| const struct st_vertex_program *vp; |
| const struct pipe_shader_state *vs; |
| struct pipe_vertex_buffer vbuffers[PIPE_MAX_SHADER_INPUTS]; |
| struct pipe_vertex_element velements[PIPE_MAX_ATTRIBS]; |
| struct pipe_index_buffer ibuffer; |
| struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS] = {NULL}; |
| struct pipe_transfer *ib_transfer = NULL; |
| const struct gl_client_array **arrays = ctx->Array._DrawArrays; |
| GLuint attr, i; |
| const GLubyte *low_addr = NULL; |
| const void *mapped_indices = NULL; |
| |
| assert(draw); |
| |
| st_validate_state(st); |
| |
| if (!index_bounds_valid) |
| vbo_get_minmax_indices(ctx, prims, ib, &min_index, &max_index, nr_prims); |
| |
| /* must get these after state validation! */ |
| vp = st->vp; |
| vs = &st->vp_variant->tgsi; |
| |
| if (!st->vp_variant->draw_shader) { |
| st->vp_variant->draw_shader = draw_create_vertex_shader(draw, vs); |
| } |
| |
| /* |
| * Set up the draw module's state. |
| * |
| * We'd like to do this less frequently, but the normal state-update |
| * code sends state updates to the pipe, not to our private draw module. |
| */ |
| assert(draw); |
| draw_set_viewport_state(draw, &st->state.viewport); |
| draw_set_clip_state(draw, &st->state.clip); |
| draw_set_rasterizer_state(draw, &st->state.rasterizer, NULL); |
| draw_bind_vertex_shader(draw, st->vp_variant->draw_shader); |
| set_feedback_vertex_format(ctx); |
| |
| /* Find the lowest address of the arrays we're drawing */ |
| if (vp->num_inputs) { |
| low_addr = arrays[vp->index_to_input[0]]->Ptr; |
| |
| for (attr = 1; attr < vp->num_inputs; attr++) { |
| const GLubyte *start = arrays[vp->index_to_input[attr]]->Ptr; |
| low_addr = MIN2(low_addr, start); |
| } |
| } |
| |
| /* loop over TGSI shader inputs to determine vertex buffer |
| * and attribute info |
| */ |
| for (attr = 0; attr < vp->num_inputs; attr++) { |
| const GLuint mesaAttr = vp->index_to_input[attr]; |
| struct gl_buffer_object *bufobj = arrays[mesaAttr]->BufferObj; |
| void *map; |
| |
| if (bufobj && bufobj->Name) { |
| /* Attribute data is in a VBO. |
| * Recall that for VBOs, the gl_client_array->Ptr field is |
| * really an offset from the start of the VBO, not a pointer. |
| */ |
| struct st_buffer_object *stobj = st_buffer_object(bufobj); |
| assert(stobj->buffer); |
| |
| vbuffers[attr].buffer = NULL; |
| vbuffers[attr].user_buffer = NULL; |
| pipe_resource_reference(&vbuffers[attr].buffer, stobj->buffer); |
| vbuffers[attr].buffer_offset = pointer_to_offset(low_addr); |
| velements[attr].src_offset = arrays[mesaAttr]->Ptr - low_addr; |
| |
| /* map the attrib buffer */ |
| map = pipe_buffer_map(pipe, vbuffers[attr].buffer, |
| PIPE_TRANSFER_READ, |
| &vb_transfer[attr]); |
| draw_set_mapped_vertex_buffer(draw, attr, map); |
| } |
| else { |
| vbuffers[attr].buffer = NULL; |
| vbuffers[attr].user_buffer = arrays[mesaAttr]->Ptr; |
| vbuffers[attr].buffer_offset = 0; |
| velements[attr].src_offset = 0; |
| |
| draw_set_mapped_vertex_buffer(draw, attr, vbuffers[attr].user_buffer); |
| } |
| |
| /* common-case setup */ |
| vbuffers[attr].stride = arrays[mesaAttr]->StrideB; /* in bytes */ |
| velements[attr].instance_divisor = 0; |
| velements[attr].vertex_buffer_index = attr; |
| velements[attr].src_format = |
| st_pipe_vertex_format(arrays[mesaAttr]->Type, |
| arrays[mesaAttr]->Size, |
| arrays[mesaAttr]->Format, |
| arrays[mesaAttr]->Normalized, |
| arrays[mesaAttr]->Integer); |
| assert(velements[attr].src_format); |
| |
| /* tell draw about this attribute */ |
| #if 0 |
| draw_set_vertex_buffer(draw, attr, &vbuffer[attr]); |
| #endif |
| } |
| |
| draw_set_vertex_buffers(draw, vp->num_inputs, vbuffers); |
| draw_set_vertex_elements(draw, vp->num_inputs, velements); |
| |
| memset(&ibuffer, 0, sizeof(ibuffer)); |
| if (ib) { |
| struct gl_buffer_object *bufobj = ib->obj; |
| |
| ibuffer.index_size = vbo_sizeof_ib_type(ib->type); |
| if (ibuffer.index_size == 0) |
| goto out_unref_vertex; |
| |
| if (bufobj && bufobj->Name) { |
| struct st_buffer_object *stobj = st_buffer_object(bufobj); |
| |
| pipe_resource_reference(&ibuffer.buffer, stobj->buffer); |
| ibuffer.offset = pointer_to_offset(ib->ptr); |
| |
| mapped_indices = pipe_buffer_map(pipe, stobj->buffer, |
| PIPE_TRANSFER_READ, &ib_transfer); |
| } |
| else { |
| /* skip setting ibuffer.buffer as the draw module does not use it */ |
| mapped_indices = ib->ptr; |
| } |
| |
| draw_set_indexes(draw, |
| (ubyte *) mapped_indices + ibuffer.offset, |
| ibuffer.index_size); |
| } |
| |
| /* set the constant buffer */ |
| draw_set_mapped_constant_buffer(st->draw, PIPE_SHADER_VERTEX, 0, |
| st->state.constants[PIPE_SHADER_VERTEX].ptr, |
| st->state.constants[PIPE_SHADER_VERTEX].size); |
| |
| |
| /* draw here */ |
| for (i = 0; i < nr_prims; i++) { |
| draw_arrays(draw, prims[i].mode, prims[i].start, prims[i].count); |
| } |
| |
| |
| /* |
| * unmap vertex/index buffers |
| */ |
| if (ib) { |
| draw_set_indexes(draw, NULL, 0); |
| if (ib_transfer) |
| pipe_buffer_unmap(pipe, ib_transfer); |
| pipe_resource_reference(&ibuffer.buffer, NULL); |
| } |
| |
| out_unref_vertex: |
| for (attr = 0; attr < vp->num_inputs; attr++) { |
| if (vb_transfer[attr]) |
| pipe_buffer_unmap(pipe, vb_transfer[attr]); |
| draw_set_mapped_vertex_buffer(draw, attr, NULL); |
| pipe_resource_reference(&vbuffers[attr].buffer, NULL); |
| } |
| draw_set_vertex_buffers(draw, 0, NULL); |
| } |
| |
| #endif /* FEATURE_feedback || FEATURE_rastpos */ |
| |